Electric-arc lamp



Feb. 19, 1929.

L. S. KUBIAC ELECTRIC ARC LAMP Fil'ed Jan. 5. 1927 3 sheets-sheetattenua* Feb. 19, 1929. 1,702,638

1 s. KuBlAc ELECTRIC ARC LAMP Filed Jan. 3, 1927 3 Sheets-Sheet 2 IWW"llllllLIIIIIIIIINIIIIIH Feb. 19, 1929. 1,702,638

l.. s. KUBlAc ELECTRIC ARG LAMP Filed Jan. 5, 1927 5 Sheets-Sheet 3Patented Feb. 19, 1929.

UNITED STATES PATENT OFFICE.

LESTER S. KUBIAC, OF YOUNGSTOWN, OHIO, ASSIGNOR TO THE PHOTOGENICMACHINE COMPANY, OF YOUNGSTOWN, OHIO, A CORPORATION OE OHIO.

ELECTRIC-ARC LAME.

.Application filed January 3, 1927. Serial No. 158,636.

My invention relates to electric arc lamps of a portable character, theprimary object being to provide a light, compact and convenient handlamp which is peculiarly adapted to therapeutic and surgical work, aswell as for use in making blue-prints, photo-prints and so forth, andalso as an auxiliary light for photographic work generally.

My lamp is entirely hand manipulated, requiring but one hand for thepurpose, and does away absolutely with the use ot the solenoid and itsattendant connections and equipment for establishing and closing thearc, and may be operated through a flexible connection with any wallcircuit or socket.

In the accompanying drawings, Fig. 1 is a side view of my device; Fig. 2is an edge View; Fig. 3 is a vertical section on line 2%3 Fig. 2,showing the device in inoperative position; Fig. 4 is a section similarto Fig. 3, but somewhat fragmentary and on a larger scale, and showingthe device in operative position; Fig. 5 is a section similar to Fig. 4,but more fragmentary and showing more in detail some of the principalfeatures ot the operating mechanism; Fig. 6 is ahorizontal section online 6-6 Fig. 5 Fig. 7 is a horizontal section on line 7 7 Fig. 4; Fig.8 is a perspective view of the clutch; Fig. 9 is a perspective view ofthe lever 30; Fig. 10 is an edge view of a trigger switch.

Rigidly secured to the rear side wall of the casing 1, is theoutstanding lug or post 2 provided at its inner end with a threadedportion for the reception of the nut 3. Swingingly mounted upon post 2,and secured by the nut 3, is the lever 4, provided at its free end withthe slot 5. See Fig. 6.

Also mounted upon the post 2 is the helical spring 6, having its freeend secured to the lever 4 by means of screw 7.

Slidably mounted upon the upright posts 8 and 8 within the casing, isthe carbon holder 9 provided with a central opening 10 in which issecured the lower carbon 11 by the screw 12.

Carried on the rear face ot the carbon holder 9 is the extension 13(Fig. 6) which is embraced by the slot- 5 iu the lever 4 Slidablymounted, intermediate its ends, upon the post 8 is the clutch yoke andhaving one end adjustably but rigidly secured between the nuts 15carried by the reciprocating clutch rod 16, and provided at its oppositeend with an oliiening 17 for the reception otl the lower carbon 11. Theclutch yoke 14carries, adjacent the clutch rod 16, the Oppositelydisposed upstanding lugs or brackets 18 to which is swingingly securedthe clutch member 19 by means of the Cotter pin 20, and which isprovided with the central opening 21 for the reception of the lowercarbon 11. The tree or outer end of the clutch member 19 is offinger-like extension 22, and carries upon its upper face t-heupstanding pin 23.

Secured to the front wall of the casing 1 are the spaced lugs orbrackets 24, in which is slidably mounted the stem 25, carrying thecollar 26 rigidly attached. A coil spring 27 is mounted upon the stem 25between the collar 26 and the lower bracket 24. Figures 4 and 7.

Rigidly secured to the rear side wall of the casing 1 is anotheroutstanding lug or post 2S (Figs. 4 and 6) upon which is swinginglymounted the lever 29 provided, intermediate its ends, with the notch 30and at its free or swinging end with the slot 31. A head-block 32 isadjustably mounted iipon the clutch rod 16 by means of the screw 33, andcarries on its inner face the pin or reduced extension 34 (Fig. 6) whichis embraced by the slot 31 in the lever 29. Also mounted upon the clutchrod 16, between the head-block 32 and the bot-tom of the casing, is thecoil spring 235.

Rigidly secured to the bottom of the casing 1 is the upstanding lug orbracket 36 upon which is swingingly mounted the short arm 37 (Fig. 4) otthe bellcrank lever 38 and carrying the pin Z39. (Fi 6.) The long arm 40of the bell-crank lever 38 is loosely con* nected at its lower end withthe upper end of the link 41, while the lower end of the link is looselyconnected with the outer end ofthe trigger 42 oi the trigger switch 43.

Secured to the bell-crank 38, at its angle, is the upstanding finger 44,the upper end oi which is connected by the coil spring 45 to 'the screw46 in the top oiE the casing. Fig. 3.

Secured to tl e bottom of the casing 1 is he tube or receptacle 47,within which is mounted the tri ger or toggle-joint switch and whichalso serves a handle for the device.

Resting upon supports 48, and securely 'fastened Yto the top oi thecasing, by means of the bolts 49, is the arc chamber of substantiallyglobular shape, with the opening 51, and carrying a tubular extension52. Mounted wit-hin this tubular extension is the carbon holder 53provided with a central opening in which the upper carbon 54 is securedby the screw The upper end ot the tube is closed by the cap piece 56.

In wiring the device, one line, 56, of the circuit passes up through thetube 47 and connects with the carbon holder 9 within the casing 1 and inwhich the lower carbon 11 is held. The other line, 57, is tied to thebinding post 58 of the switch 43 and, when the switch is closed as shownin Figures 4 and 10, the current travels up through plate 59, across thebar 60 and down the plate 61 to the binding post 62 to which theextension of line 57 is tied. From there this line passes up through thecasing 1, through the tube 63 and into the tubular extension 52 on thetop of the arc chamber 50 where it connects with the carbon holder inwhich the upper carbon 54 is held, thus completing the circuit.

The operation of my lamp, briefly stated, is as follows: Assuming thatthe device is in inoperative position (Fig. take` it in either hand andpress the button 64 on the long arm 40 of the bell-crank lever 38. Thiswill straighten the toggle-link connection between the arm 40 and thelink 41, thus forcing the outer end of the switch trigger 42 downwardlyand closing the switch. (Figures 4 and 10.) The closing of the circuitwill be indicated by a snapping of the switch, and it should be held inthis position for a few seconds, permitting the current to flow untilthe carbons become heated. Then press the button further until the catchor dog 65, under pressure of spring 66, engages the pin 67 in the arm40, which will hold it in operative position. the short arm 37 of thebell-crank 38 is thus rocked downwardly, the pin 39 will engage thelever 29 in the notch 30, thus rocking the tree end of the leverdownwardly, which will force the clutch rod 16 downwardly and with itthe clutch yoke 14 and the clutch member 19. This will bring the lingereiz'tensi on 22 of the clutch member into Contact with the upper end ofthe stem .25 which will 'force the clutch member to an oblique positionwith the carbon 11, causing it to grip the carbon and force itdownwardly, thus establishing the arc.

Vhen it is desired to close the arc, release the catch from the pin 67,when the spring 45 will rock the bell-crank lever 38 upwardly, thusreleasing the pressure of the pin 39 upon the lever 29, when the spring35 on the clutch rod 16 will erce the clutch member 19 upwardly,bringing the pin 28 on the clutch member into contact with the base ofthe are chamber, thus releasing its grip on the carbon 11, after whichthe carbon holder 9 will be lifted by the tension olf the spring 6rocking the lever 4 upwardly and bringing the lower carbon into contactwith the upper carbon, thus closing the arc.

It will be understood that the operating mechanism is so adjusted as toclose the circuit, thus permitting the current to iiow, through thecai-bons before they are separated and the arc established; and also toopen the circuit before the are is closed.

It will also be understood that the mechanism is provided with allnecessary iusula tion to prevent leakage of the current.

I claim:

1. In an electric arc lamp, a casing having a pair of spaced uprightposts therein, a carbon holder slidably mounted upon said posts, anuprio'ht reciprocating clutch rod mounted in said casing, a head-blocksecured toY said clutch rod, a clutch yoke slidably mounted upon one ofsaid posts and having one end secured to said clutch rod, a clutchmember swinfrinul mounted u on said 7oke means for causing said clutchmember to engage and release the carbon, a spring-controlled leverswlngingly mounted 1n said casing and having its tree end looselyconnected with said carbon holder, another lever swingingly mounted yinsaid casing and having its free end loosely connected with saidhead-block, means for operating said levers, an arc chamber carrying anextension, and a carbon holder mounted in said extension..

2. In an electric are lamp, a casing having a pair of upright postsmounted therein, a carbon holder yslidably mounted upon said posts, anupright reciprocating clutch rod, a head-block secured to said clutchrod, a clutch yoke slidably mounted upon one oi"` said posts and havingone end secured to said clutch rod, a clutch member swingingly mountedupon said yoke, means for causing said clutch member to engage andrelease the carbon, a spring-controlled lever swingingly mounted in saidcasing and having its free end loosely connected with said carbonholder, another lever swingingly mounted in said casing and having itsfree end loosely connected with said head-block, a bell-crank leverswingingly mounted in said casing, a spring-controlled finger membercarried by said lever, a hollow tube secured to the bottom of saidcasing and having a switch mounted therein, said switch being providedwith a trigger member, a link loosely interposed between the free endvof said bell-crank lever and said trigger member, an arc chambercarrying an extension, and a Vcarbon holder mounted in said extension.

3. In an electric arc lamp, a casing having a pair of upright postsmounted therein, a carbon holder slidably mounted upon said posts, anupright reciprocating clutch-rod, a head-block secured to said clutchrod, a clutch yoke slidably mounted upon one of said posts and havingone end secured to said clutch rod, :L clutch member swingingly mountedupon said yoke, means for causing said clutch member to engage andrelease the carbon, e spring-controlled lever swingngly mounted in seidcasing' and having its free end loosely connected with seid Carbonholder, another lever swingingly mounted in said Casing und lim/*ing itsfree end loosely connected with seid head-block, u bell-crank leverswingingly mounted in seid easing, u pawl to hold said bell-Crunk leverin operative position, a spring-controlled finger member carried by saidbell-crank lever, a hollow tube secured to the bot-tom of said easingand having a, switch mounted therein, said switch being provided with atrigger member, a link loosely interposed between the free end of saidbell-crank lever and said trigger member, an are chamber carrying anextension, and a carbon hol der mounted in said extension.

In testimony whereof, I have hereunto affixed my signature.

LESTER S. KUBIAC.

